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刷刷题刷刷变学霸
举一反三
【单选题】The immune system is equal in complexity to the combined intricacies of the brain and nervous system. The success of the immune system in defending the body relies on a dynamic regulatory communicatio...
A.
recognize and reject all alien molecules that enter the body.
B.
remove all the substances that invade the body organisms.
C.
defend the body from attacks of different viruses or bacteria.
D.
identify and specify all non-self molecules it encounters.